package lab02.test10;

public class Test10 {
    public static void main(String[] args) {
        People p = new People();
        p.Speak();

        ChinaPeople c = new ChinaPeople();
        c.Speak();

        AmericanPeople a = new AmericanPeople();
        a.Speak();

        BeiJingPeople b = new BeiJingPeople();
        b.Speak();
    }
}
